Translates the six REPUTATION_RANKS labels in reputation-rank.ts
(Geachtet/Vertraut/Anerkannt/Bekannt/Geduldet/Fremder -> Esteemed/
Trusted/Recognized/Known/Tolerated/Stranger), per the glossary in
docs/superpowers/specs/2026-08-21-english-game-content-foundation-design.md
section 4. Keys and thresholds are unchanged.
Also updates reputation.service.spec.ts and reputation.controller.spec.ts,
which asserted the German rankLabel value returned by
resolveReputationRank() via the service/controller layer.